Stem-making machine



Jan. 3, 1928.

J. T. PAGAN STEM MAKING MACHINE Filed July 29. 1920 ZNYENTDR HisATTORNEY.

Jan. 3, 1928. 1,655,140

J. T. FAGAN STEM MAKING MACHINE JNyENTc/'R s zbfmr 7'.' 22a-sm,

by ffm/4M Passed Jan. a, 192s.

U N IT E D S T A T JOHN r. raam,

0l' CLEVELAND, OHIO, ASSIGNOR TO GENERAL ELECTRIC COMPANY,

A. CORPORATION OF NEW YORK.

STEM-MAKING MACHINE.

Application mea my 2a, isao. semi No. asaaoi.

invention relates to machines for making stems for incandescent lampsand similar articles, and more particularly to machines for making stemsfor tipless lamps and similar articles such as disclosed in Patent No.1,423,956, issued July 25, 1922, to Mitchell and White, althou h myinvention is also applicable to the ma ing of other types of stems. Oneobject of my invention is to produce a compact machine which will have acomparatively high output andy in which the arts will be so disposed asto minimize t e wear and warping of parts. Machines of this character inwhich the article manufactured is subjected to heat are particularlysubject to warping of parts, and one of the important features of myinvention is that the actuating mechanisms for the holders of the stemparts and the heating means are so related that these mechanisms are notsubject to high heating. Other features and advantages of my inventionwil appear from the description of a specific embo iment thereof whichfollows.

In the operation of this specific machine embodying my invention, theassembling o the stem arts in the machine and the removal of t ecompleted stem is accomplished manuall The stem parts are placed in thehea preferably in the following order, the stem tube, the leading-inwires, the exhaust tube if a tipless stem is being made, and thefilament support rod which is ordinarily of cane glass. The steps of theoperation of making a tipless stem comprise assembling the stem parts,heatin the parts to fuse that ortion which forms 'tr e seal about theleading-in wires, clamping together the fused ortion to form the seal,and blowing air into the exhaust tube to form an a erture through thewalls of stem tube which have lost their separate identity by thefusing. If an ordinary stem is to be made, the exhaust tube is omittedfrom the assembly and the blowing step from the stemmaking operation.There are a number of heads mounted on a carrier and the drive isintermittent so that each head pauses in succession in operativerelation to each of a series of means each performing a function in themanufacture o the stem- I have provided means for causin a relativemovement between the flame irectingfusing means and the head to allowpassage of the latter as the carrier is moved. In the specific eml 10(Fi .2) carries the exhaust tu e and p bodiment the burners are swungout of the path of the head as the rotary carrier in dexes.

In the accompanying drawings, Fig. 1 is a top lan View of a machineembodying my invention; Fig. 2 is a sectional elevation on the line 2-2of Fig. 1; Fig. 3 is a fragmentary enlarged elevation of one of the heads; Fig. 4 is a top plan view on the section line 4-4 of Fi 3; Fig. 5is a top lan view on the section line 5-5 of Fig. 3; Fig. 6 illustratesthe operation performed in position A; Fig. 7 in position B; Fig. 8 inosition C; Fig. 9 the clamping o eration in position D; Fig. 10 thepartial Iblowing operation in osition E; Fig. 11 the completion of the bowing operation in position F; and Fi 12 is a diagram of the airpressure indicating means and Fig. 13 is a section on the line 13/13 ofFig. 5.

Referring to the drawings, the standard the table 11 which supe apron12. The indexing mechadriven as follows. Through the 13 oii the table 11passes the vertical ports t nism is bearing f shaft 14 which also hassuitable bearings in the standard 10. The shaft 14 is'driven byla motor(not shown) through a belt 15 w ich drives a pulley 16 on the shaft 17carried,by the tab e 11 and which has a worm 18 fastened to the otherend. The worin 18 meshes with and drives the worm wheel 19 which iscarried b the shaft 14 but is free to rotate separate y therefrom andwhich has an intermittent-gear 20 attached thereto. To cause the machineto index the gear 20 periodically meshes with and drives the gear 21 onthe vertical shaft 22 which is carried in suitable bearings by the table11. On the upper end of the shaft 22 is a Geneva inion comprising a disc23 having an arm 24.- on each side, and these arms carry a roller 25 ona pin 26 between their ends. When the gear 21 is driven by the gear 20,the disc 23 and roller 25 mesh with the Geneva gear 26' which isfastened to the vertical shaft 27 which passes through the bearing 28 onthe apron 12. This drive gives an intermittent motion to the shaft 27causing each of the heads, described later, to pause for a timeat eachposition and then to be moved on to the next position.

On the shaft 27 are mounted three superplsed spiders constituting thecarrier 27.

e uppermost spider 28 supports the exhaust tube holdin and operatingmeans, the intermediate spi er 29 supports the flare tube holding andoperating means; and the lowermost spider 30 supports the holder andoperating mechanism for the filament support rod and positioning meansfor the leading-in wires. There is another spider 31 which rests on thebearing 28 and is positioned on the shaft 27 by the collar 32. Thisspider serves to support the means for holding the leading-in wires andalso the means for operation and controlling the various stem partsholding means. In the specific machine shown each of these spiders haseight arms and they cach support parts which collectively make eightsimilar heads 33.

Mechanism is provided on each head to support a stem tube, exhaust tube,filament. support rod and a pair of leading-in wires. This mechanism isdistributed on thc head 33 as follows. For each head 33, the spider 31carries a vertical control shaft 34 (see Figs. 3, 4 and 5) which issuitably supported in each of the members of the carrier and whichcarries the actuating means for the mechanisms ou these members. On thelower end of the shaft 34 is fastened a crank 35 (Fig. 3) and above thecrank on the shaft 34 is a rotatable sleeve 36 having fastened on thelower end a lever 37 which has a handle 38 at one end and a projection39 at the other end. The lever 37 gives the operator a means ofcontrolling the shaft 34 as the rojection 39 strikes one armY of thecranll; 35 so as to turn the shaft 34 when the lever 37 is turned to theleft by means of the handle 38. The rotation of the lever 37 to the leftactuates all the mechanisms and they are closed in succession as thelever returns to the right until it reaches its normal position. Afurther movement to the right causes an opening of one of the holders,namely, that for the filament support rod. On the upper end of thesleeve 36 is fastened a collar 40 having an arm 41 which carries a pin42. Through a link 43 (see also Fig. 5) the pin 42 is connected to thepin 44 on one arm of the crank 45 which is pivoted on the spider 30 at46. A collar 47 (Fig. 3) having a projection 48, which may be engaged bythe crank 45 to cause rotation thereof, is fastened to a sleeve 49 (seealso Fig. 5) which asses through the spider 30 around the shaft 34 andwhich has a crank 50 (Fi 5) attached to its upper end. 'When t e lever37 is turned to the right it causes the crank 45 to engage theprojection 48 consequently rotating the collar 47, sleeve 49, a crank 50to open the filament supporting rod holding jaws as hereinafterdescribed. One arm of the crank 50 is connected through a link 51 withthe finger 52 which is ivoted on a rod 53 passing through the memgers28, 29 and 30 as more fully explained hereinafter, and the other arm ofthe crank 50 is connected through the link 54 to a linger 55 pivoted ona rod 56 supported in a manner similar to the rod 53 as more fullyexplained hereinafter. Rotation of the crank 5() in the direction of thearrow (Fig. 5) causes a separation of the fingers 52 and 55. Thisrotation may be caused by the rotation of the lever 37 to the rightcaus` ing the crank 45 to engage the projection 48 as previouslymentioned or b the following mechanism. A cam 57 is astened to theshaft, 34 between the fingers 52 and 55 so that when the shaft isrotated to the left, as by turning the lever 37 to the left aspreviously described, the cam 57 engages a pin 58 fastened in the crank50 and upon further rotation forces the fingers 52 and 55 to separate asfor the insertion or removal of the rod 59 as more fully describedlater. The spring 60 fastened to the lower member 30 and one arm of thecrank 50 tends to keep the lingers in a closed osition.

The fingers 52 and 55 sli e in guideways formed by the lower member 30,a spacing washer and a top piece 63. Pivoted at 63 and 64 respectivelyon the fingers 55 and 52 respectively are the leading-in wire holdingfingers 64 and 65 which rest on the lingers 55 and 52 respectively butpass over the top piece 63 of the guideways. The lingers 64 and 65 whenclosed hold the leadingdn wires 66 in position to prevent shiftingduring the clamping operation which is more fully described later, andare notched at 67 to permit the passage therethrough of the rod 59. Pins69 and 70 are respectively so placed on each finger 55 and 52, that whenthe fingers are opened as previously described thev respectively bearagainst and cause the fingers 64 and 65 to open. A spring 70 attached tofingers 64 and 65 tends to keep them in a closed position. If the lever37 is turned to the right the crank 45 through the link 43 will beforced into engagement with the projection 48 of the collar 47 which isfastened to the sleeve 49 on the upper end of which is the crank 50 andfurther turning of the lever 37 to the right will cause the crank a0 tobe rotated to the left and so to open the fingers 55 and 52 and also thefingers 64 and 65.

A collar 71 (Fig. 3) fastened to the lower part of the sleeve 49 carriesan upright 72 with an arc-shaped arm 73 which has an incline 74 which,when the lever 37 is turned from its center position to the left aspreviously described, engages and forces upward a rod 75 resting in andsliding in the vertical support 76 carried by the spider 30. The rod 75in its upward movement engages a fin er 77 pivoted at 78 on the spider30 causmg the finger 77 to move upwardly about the pivot 78 to auffe thestem tube 78 when the head 33 isoaded as well as to force u Wardly thecom leted stem at the seal w en it has been ormed just above the pair offingers 64' and 65 which are simultaneously opened by movement of thelever 37 to the left as previously described.

On the middle member 29 are carried the stem tube holding fingers 79 and80 (Figs. 3 and 4) which are respectively pivoted on the rods 56 and 53previously mentioned. The fingers 79 and 80 are connected through thelinks 81 and 82 respectively to either arm of the crank 83 which isrotatably positioned on the vertical shaft 34 so that when lever 37 isturned to the left the cam 84 fastened to the shaft 34 engages a pin 85on the crank 83 causin the crank to force apart the lingers 79 an 80 forthe insertion or removal of the stem tube 7 8. A sprin 86 fastened toone arm of the crank 83 an to the spider 29 tends to keep the lingers 79and 80 in a closed position. The fingers slide in guideways formed bythe middle member 29, a spacing washer, and the top piece 89. Movementof the lever 37 to the right does not affect the fingers 79 and 80.

The spider 28 (Figs. 3 and 1) carries the exhaust tube holding fingers90 and 91 which are respectively pivoted on the rods 56 and 53previously mentioned and are connected through links 92 and 93respectively to either arm of the crank 94 rotatably carried on theshaftv 34. A spring 95 fastened to one arm of the crank 94 and to thespider 28 tends to keep the lingers closed. When the lever 37 is turnedto the left a cam 96 fastened to the shaft 34 enga es a pin 97 on thecrank 94 causing the ngers 90 and 91 to be separated forthe insertion orremoval of the exhaust tube 98. The fingers slide in guideways formed bythe spider 28, a spacing washer and the top piece 101. The movementofthe lever 37 to the right does not all'ect the fin ers 90 and 91. Thespider 28 may be raise on the shaft 27 and separated from the middlemember 29 in order to adapt the machine to making stems with a longerstem tube 78 than that shown in the drawing, Fig. 3. In fact, the` siders 28, 29, 30 and 31 may be given di erent relative ositions on theshaft 27 if desired or ound more convenient.

When the lever 37 lis in a radial position with reference to the spider31 as shown in Fig. 1 and the head 33 is not loaded with stem parts, thepairs of lingers 52 and 55, 79 and 80, and 90 and 91 are not complete-1y closed together as the respective cranks 50, 83 and 94 are preventedfrom further rotative action on the part of the respective springs 60,86 and 95 by suitable stops. Thus it is possible to remove any finger orpair of fingers without disturbing the rest of the head. Inasrnuch asthe rod 53 (Fig. 3) carries the fingers 52, 80 and 91 and blo 103 andconsequently to bring the protector anges 102 together at their upperend. his facilitates the insertion therein of the leading-in Wires 66 atthe loading i position. The cane glass gauge 105 extends through theblock 103 and the bottom member 31 and comes into en agement with an arcshaped cam 107 (see a so Figs. 1 and 5 which is carried on the lever 37and Whic normally holds up the H-shaped member 104 against theact-ion ofthe spring 106. An incline 108 on the right end of the cam 107facilitates the engagement of the cam 107 with the lower end of the caneglass gauge 105 the upper end of which has a rim 109 artially encirclingthe top to facilitate the oading of the cane glass.

Position AV (Fig. 1) is a loading position and to load the head 33 theoperator turns the lever 37 the full distance to the left. This permitsthe cane glass gauge 105 (Fig. 3) to fall and the leading-in Wireprotector gauges 102 to be brought together at their upper end and alsoopens the pairs of fingers 52 and 55, 64 and 65, 79 and 80, and 90 and91 as previously described. The stem tube 78' is inserted and the lever37 moved slightly to the right to close the fingers 79 and 8,0 whichhold the stem tube. The leading-in Wires 66 are inserted through thestem tube in the protector gauges 102 and are positioned in the supports110 and 111 carried on the finger 79. The exhaust tube 98 is thenpositioned in the stem tube and the lever 37 turned to the right toclose the fingers 90 and 91 upon the exhaust tube and also to separatethe leading-in wire protector gauges 102. The pairs of fingers 52 and 55and 64 and 65 have been closed by the rotation of the lever 37 to theright but after the normal position has been reached further rotation tothe right opens them again and leaves the others unmoved. The cane glass59 is now inserted so as to rest upon the gauge 105 and the fingers 52and 55 closed upon it by returning the lever 37 to the left until itlies in a line extending radially from the center of the spider 31. Thehead is now loaded for the formation of a stem (see Figs. 3 and 6).

Position B (Fig. 1') is a heating position and here the parts locatedjust above the lingers 64' and 65 (Fig. 7) are heated by lll) theburners 112 (Fig. 1) carried on either side of the support 113 which ispivoted at 114 to the apron 12. The gas and air mixture is supplied tothe burners through a rubber hose 114 attached to a nip le 115 on theburner support 113 and to tie supply lines 116 and 117. The support 113has a finger resting on a finger 116 which is attached to the burnersupport 117 (at position C) whose other finger 118 rests on a rod 119(Fig. 2) carried in the apron 12. Resting on the finger 118 (Fig. 1) isa Enger 126 attached fo the clamp and burner supportV 121 at position D.The support 121 has a second finger 122 upon which rests a linger' 123attached to the burner support 124 (at position E) upon Whose otherfinger 125 rests the finger 126 of the burner support 127 in position F.At the time of indexing a roller 128 (Fig. 2) pivoted in the lower endof the rod 11,9 rides up the inclined surface 129 in the upper arm 24 ofthe Geneva pinion, previously mentioned, so that the rod 119 is raised,thus rairging the whole series of fingers and causing their respectivesupports to be tilted back about their respective pivots so as towithdraw their respective burners from the path of the heads 33 duringthe indexing movement. Similar springs 13() (Fig. 2) attached to theapron 12 and the similar supports 131 on fingers 115, 120, 123 and 126(Fig. 1) of the respective burner supports return the burner supportsinto operative position. The relative disposition of the burners and themeans and mechanism for supporting the stem parts is such that the flameis not directed on these means or mechanism. This is an importantfeature of my invention.

In position C the burners 132 (Figs. 1, 2 and 8) on the burner support117 intensively heat the stem parts above the fingers 64 and 65. Theburners 132 are supplied with a gas and air mixture similarly to theburners 112 previously mentioned.

In position D the burners 133 (Figs. 1, 2, 3 and 9) on the support121"intensively heat the stem parts above the lingers 64 and 65. Theburners 133 are supplied with a gas and air mixture similarly to theburners 112 previously mentioned. The seal is then formed in the stem bythe clamps 134 and 135 which are carried by the support 121 and whichare connected through links 136 (Fig..2) and 137 (Fig. 3) to a rod 138(Figs. 2 and 3) also carried by the su port 121. Below the lower end ofthe ro 138 and in line therewith is a rod 139 (Fig. 2) carried by theapron 12. On the lower part of the rod 139 is an adjustable stop 140 andbelow the stop is a spring 141 encircling the rod 139 and resting on thecylinder 142 connected through links 143 to one arm of a crank 144carried by the apron 12. A stop 144 on the lower end of the rod 139prevents the accidental removal of the cylinder 142. A roller 145pivoted in the other arm of the crank 144 rides on the end of ahorizontal rod 146 carried by the table 11 and in the other end of therod 146 is pvoted a roller 147 which rides on a cam 148 fastened to theshaft 14 previously described. Just before the carrier 27 indexes, thecam 148 forces the rod 146 outwardly and the rod 146 causes the crank144 through the links 143 to pull upwardly on the cylinder 142 tendingto compress the spring 141 against the stop 140 which causes the rod 139to be raised forcing the rod 138 upwardly and thus causing the clamps134 and 135 through the links 136 and 137 to close upon the glass toform the seal. The cam 148 then permits the rod 146 to return thusreleasing the clamps.

In position E (Figs. 1 and 10) the burners 149 carried by the support124 heat the stem just above the seal or clamped portion, the burnersbeing supplied with a gas and air mixture similarly to the burners 112previously mentioned. A nozzle 150 (Fig. 1) which is attached to thepipe 151 carried by the apron 12 and connected to a source of airpressure, is aligned with and just above the upper end of the exhausttube 98 and directs air preferably of low pressure into the end of theexhaust tube. As the glass above the seal is fused by the burners 149,the air pressure from the nozzle 150 causes a bulb-shaped part to formgradually just above the seal and then to blow out forming an aperture152 (see F ig 11) which connects the passage through the exhaust tubewith the outside of the stem tube. This complete operation is fullydescribed and explained in the application of Mitchell and White, SerialNo. 283,801, filed March 20, 1919, now Patent No. 1,423,956, July 25,1922, and also in the Patent 1,423,957 to Mitchell et al. In order tosecure an indication of the amount of air pressure, one end of a U-tuhe153 (Fig. 12) containing a fluid such as water or mercury is connectedto the pipe 151, the other end of the U-tube being open to theatmosphere. The difference in the height of the columns of fluid in theU-tube 153 as measured on a graduated card 154 attached thereto is anindication of the pressure of air directed from the nozzle 150. In orderto cool the stem tube 78 and exhaust tube 98, I preferably provide anozzle 154 connected to the pipe 151 to direct a. stream of low pressureair into the stem tube 78.

In position F (Figs. 1 and 11) I have provided burners 155 on thesupport 127 to heat the stem just above the seal anda nozzle 156 similarto the nozzle 150 and similarly placed and connected to the sourceof`air pressure with similar means for securing an indication of thepressure of air directed ture is into the exhaust .tube from the nozzle156. While usually the aperture forming operation may be completed inposition E, it may be desirable or preferable to perform the operationin two steps using a lower air ressure in each step. In such case theurners 155 are lighted and air pressure turned on through lthe nozzle156 and the operation as exp ained for position E will be completed inposition F while the preliminary heating and forming of the bulbshapedportion above the seal will be carried out in position E. If the two-steaperture forming operation is used, I pre er to provide a nozzle 157(see Fig. 11) similar to the' nozzle 154 for the purpose of cooling thestem tube 78 and exhaust tube 98.

In positions G and H (Fig. 1) the now completed stem is allowed to coolalthough position H may be used as an unloading sition, if desired.Usually the unloading is preferably done at the loading position, thatis, position A, as it requires such a short period of time to beaccomplished. The unloading is performed by turnin the lever 37 (Figa 1and 3) to the left w ich opens all the pairs of ngers and causes theiinger 77 to force upwardly on the end of the seal of the completed stemto facilitate the unloading.

In operation the stem parts are assembled in position A as shown in Fig.6; are heated reliminarily in position B as shown in ig. 7; and areintensively heated in position C as shown in Fig. 8. In osition D, asshown in Fig. 9, the vfused seal 1s clamped; in position E, as shown inFig. 10, an aperblown Vthrough the nozzle 150; and in position F, asshown in Fig. 11, the stem is allowed to cool although the a ertureforming operation may be artial y performed at this step. Positions andH are cooling positions although position H ma be used as an unloadingposition if desired.4 If position H is not used as an unloadingposition, the unloading is performed at position A. v

While I have described my invention as embodied in a machine for makingstems for tipless lamps, it should be understood that the same machinemay readily be adapted to the production of stems for the usual tippedlamp. Furthermore while I have described a s ecfic machine, I do notwish to be limite in scope thereto as various modifications will readilsuggest themselves to those skilled in t e art.

What I claim as new and desire to secure by Letters Patent of the UnitedStates, is:

1. In a stem making machine, the combination with a movable carrier andmeans for moving said carrier, of a head on said carrier comprisingmeans for supporting a stem tube, means for supporting an exhaust tubein said stem tube, means for supporting lead-v in -in wires between saidexhaust tube and said stem tube, means for supporting a lament supportrod aligned with the ends of said stem tube and said exhaust tube, meansfor causing the successive engagement of said supporting means with theaforesaid stem parts, and means for uniting said stem parts together. v

2. In a stem making machine, the combination] with a movable carrier andmeans for moving said carrier, of a head on said carrier comprisingmeans for supporting a stem tube, means for supporting an exhaust tubein said stem tube, means for supportin leadin -in wires between saidexhaust tage and said stem tube, means for su porting a {ilament supportrod ali ed with the ends of said stem tube and said exhaust tube, meansfor unitin said stem parts and means for causing t e simultaneousrelease of said supporting means for the removal of the completed stem.

3. In a stem makin machine, the combination with a movabe carrier, meansfor moving said carrier and a head on said carrier for supporting stemparts comprising means for supportin a stem' tube, means for causingsaid stem tu e supporting means to engage said stem tube, means forsupporting an exhaust tube in said stem tube, means for causing saidexhaust tube supportin means to engage said exhaust tube, means or sup-.porting leadin -in wiresy between said exhaust tube an said stem tube,means for supporting a filament support rod aligned with the ends of thesaid stem tube and said exhaust tube, means for causing said rodsupporting means to engage said rod, and means for causing thesuccessive engagement of said engaging means of said respectivesupporting means with the aforesaid stem parts.

4. In a stem m machine, the combination with a movab e carrier, `meansfor moving said carrier and a head on said carrier for supporting stemparts comprising means for su porting a stem tube, means for causingsaid stem tube supporting means to engage said stem tube, means forsupporting an exhaust tube in said stem tube, means for causing saidexhaust tube supporting means to engage said exhaust tube, means forsupporting` leadin -in wires between said exhaust tube and sait? stemtube, means for supporting a filament support rod aligned with theendsof the said stemtube and said exhaust tube, means for causing saidrod supporting means to engage said cane glass and means for causing thesimultaneous release of said engaging means of said sup, porting meansfor the removal of the aforesaid stem parts.

5. In a stem making machine, the combination with a movable carrier, ineans for moving said carrier and a head on said carrier Y porting meansto en for supporting stem parts comprising means for supporting a stemtube, means for causing said stem tube supportin means to engage saidstem tube, means Ier supporting an exhaust tube in said stem tube, meansfor causing said exhaust tube supportinr means to engage said exhausttube, means Ier supporting leading-in wires between said exhaust tubeand said stem tube, means for supporting filament support rod alignedwith the ends of the said stem tube and said exhaust tube, means forcausing said rod supporting means to engage said rod and means forcausing the simultaneous release of said engaving means of saidsupporting means for t e removal of the completed stem and co-actingmeans for forcing said stem upward to assist in the removal thereof.

6. In a stem making machine, the combination with a movable carrier,means for moving said carrier and a head on said carrier for supportingstem parts comprising means for supportin a stem tube, means for causingsaid stem tu e supporting means to engage said stem tube, means forsupporting an exhaust tube in said stem tube, means for causing saidexhaust tube supporting means to engage said exhaust tube, means forsupporting leading-in wires between said ex aust tube and said stemtube, means for supporting filament support rod aligned with the ends ofthe said stem tube and said exhaust tube, means for causing said rodsupporting means to engage said rod, and means for causin the successiveengagement of said engaging means of said res ective supporting meanswith the aforesai stem arts comprising a cam shaft, cams mounted t ereoncorresponding to the Stem tube supporting means, the exhaust tubesupporting means and the cane glass supporting means, means successivelyco-acting with said cams and respective means and means for causing therotation of said cam shaft to cause said cams to disengage saidco-acting means Jto permit the respective aforesaid engaging means tofunction.

7. In a stem makin machine, the combination with a movab e carrier,means ,for moving said carrier and a head on sa1d earrier for supportingstem parts comprising means for supporting stem tube, means for causingsaid stem tube supporting means to engage said stem tube, means forsupporting an exhaust tube in said stem tube, means for causingr saidexhaust tube supportingI means to engage said exhaust tube, means orsupporting leadin -in wires between said exaust tube an said stem tube,means for supporting filament support rod aligned with the ends of thesaid stem tube and said exhaust tube, means for causing said rod supgesaid cane glass and means for automatically releasing sai engaging meansof said respective supporting means to permit the removal of the saidporting means.

8. In a stem making machine, the combination with `a movable carrier,means for moving said carrier and a head on said carrier for supportingstem parts comprising means for supportin a stem tube, means for esupporting means to causing said stem tu engage said stem tube, meansfor supporting stem tube, means for supan exhaust tube in said causingsaid exhaust tube supporting means to engage said exhaust tube, meansfor supporting leading-in wires between said exhaust tube and said stemtube, means for supporting filament support rod aligned with the ends ofthe said stem tube and said exhaust tube, means for causing said rodsupporting means to engage said rod, means for gauging the position ofthe cane glass, means for causing the independent release of the caneglass engaging means, means for operating said gauging means.

9. A machine for assemblin and uniting work parts to form a stem ger anincandescent lamp or similar article comprising a plurality of pairs ofjaws adapted to move in horizontal planes and means for sequentiallyactuating the pairs of jaws to receive the work parts in the order oftheir assembly.

10. A machine for assembling and uniting work parts to form a stem foran incandescent lamp or similar article comprising a plurality of pairsof jaws adapted to move in horizontal planes and means for successivelyactuating said jaws to permit the insertion of said work parts forassembly, said jaws being adapted for substantially simultaneousactuation to release said work arts.

11. In apparatus for assemb ing and consolidating work blanksconsistingof an arbor, a are tube and an exhaust tube to form stems forincandescent lamps or similar articles, the combination of a plurali ofwork-blank-supporting clamps, each o the said clamps comprisin twoopposing jaws arranged to swing in orizontal planes and aboutindependent axes, an actuating lever for operating said jaws to receiveand sup- Dortthe blanks, means for ap lying heat locally to theassembled parts and means for directing a current of air throu h the exhaust tube to provide a communication for exhaust purposes.

12. In means for assembling and consoli dating a plurality of glassparts to form stems for incandescent lamps, the combination of upper,lower and intermediate workholding clamps, and an actuating lever foroperating said clamps to receveand support an arbor and flare tube on avertical axial line, the above mentioned lever beingl adapted forindependently operatin the upper laips to receive and supportgl anexhaust 13. In a stem machine, the combination of extending in the samedirection, each palr being shaped at one end to hold a stem part,supporting means for said clamps located entirely near the opposite endsthereof, a substantially vertically extending shaft also located nearsaid opposite ends and-cosacting means whereby the movement of saidshaft controls the opening and closing of said pairs of clamps.

14. In a stem machine, the combination of a movable carrier, meansYmounted adjacent to said carrier for pro'ecting a flame in asubstantially horizontai direction and a head mounted on said carrierand comprising a plurality of su erposed airs of sub stantiallyhorizontal y exten ing clamps eachv adapted to support a stem part sothat the stem assembly extends through the line of the aforesaid flame,and supporting and actuatin means for said clamps located out of line osaid fiame.

15. In a stem lnachine, the combination of a movable carrier, havingmounted thereon a plurality of heads each comprising superposed pairs ofsubstantially horizontally extending clamps each adapted to support astem part, means dis osed in the path of travel of said stem ordirecting a flame against a portion thereof, supporting and actuatingmeans for said clamps disposed out of the line of said flame, and meansfor causm flame irecting means and said head to allow lntermittentmovement of said carrier.

a relative movement between said 16. In a stem machine, the combinationof a movable carrier having a plurality of heads supported thereon eachcomprising means for holding stem parts, a burner mounted adjacent tothe said carrier, means for intermittently moving said carrier to bringsaid stem parts successively into operative relation to said burner andmeans for moving said burner transversely to the path of travel of saidstem parts to allow their passage as the carrier is moved.

17 In a stem machine, the combination of a rotary carrier having aplurality of heads supported thereon each comprising means for holdingstem arts, a burner mounted adjacent to the sald carrier, means forindexing said carrier to bring said stem parts successively intooperative relation to said burner and means forV moving said burnertransversely to the path of travel of said stem parts to allow t eirpassage as the carrier is indexed.

18. In a stem machine, the combination of a movable carrier having apluralityof heads supported thereon each comprising means for holdingstem parts, a burner pivotally mounted adjacent to the said carrier,means for intermittently moving said carri er to bring said stem partssuccessively into operative relation to said burner and means forswinging said burner transversely out of the path of travel of said stemparts to allow their passage as the carrier 1s moved.

In witness whereof, I have hereunto set my hand this twenty-sixth day ofJuly, 1920.

JOHN T. FAGAN.

means for projecting a flame in a generally horizontal direction and ahead comprising a. plurality of superposed pairs of clamps extending inthe same direction, each pair being shaped at one end to hold a stempart, supporting means for said clamps located entirely near theopposite ends thereof, a substantially vertically extending shaft alsolocated near said opposite ends and co-acting means whereby the movementof said shaft controls the opening and closing of said pairs of clamps.

14. In a stem machine, the combination of `a movable carrier, meansmounted adjacent to said carrier for pro'ecting a flame in asubstantially horizontal direction and a head mounted on said carrierand comprising a lurality of superposed pairs of substantia lyhorizontally extending clamps each adapted to support a stem part sothat the stem assembly extends through the line of the aforesaid llame,and supporting and actuatin means for said clamps located out of line osaid flame.

l5. In a stem machine, thc combination of a movable carrier, havingrmounted thereon a plurality of heads each comprising superposed pairs ofsubstantially horizontally extending clamps each adapted to support astem part, means dis osed in the path of travel of said stem ordirecting a llame against a portion thereof, supporting and actuatingmeans for said clamps disposed out of the line of said liame, and meansfor causing a relative movement between said flame lrecting means andsaid head to allow intermittent movement of said carrier.

16. In a stem machine, the combination of a movable carrier having aplurality of heads supported thereon each comprising means for holdingstem parts, a burner mounted adjacent to the said carrier, means forintermittently moving said carrier to bring said stem parts successivelyinto operative relation t0 said burner and means for moving said burnertransversely to the ath of travel of said stem parts to allow t eirpassage as the carrier is moved.

17. In a stem machine, the combination of a rotary carrier having aplurality7 of heads supported thereon each comprismg means for holdingstem arts, a burner mounted adjacent to the sald carrier, means forindexing said carrier to bring said stem parts successively intooperative relation to said burner and means for moving said burnertransversely to the path of travel of said stem parts to allow theirpassage as the carrier is indexed.

18. In a stem machine, the combination of a movable carrier having aplurality of heads supported thereon each comprising means for holdingstem parts, a burner pivotally mounted adjacent to the said carrier,means for intermittently moving said carri er `to bring said stem partssuccessively into operative relation to said burner and means forswinging said burner transversely out of the path of travel of said stemparts to allow their passage as the carrier 1s moved.

In witness whereof, I have hereunto set my hand this twenty-sixth day ofJuly, 1920.

JOHN T. FAGAN.

CERTIFICATE 0F CORRECTION Patent No. l, 655, 140.

Granted January 3, 1928, to

JOHN T. FAGAN.

It is hereby certified that errorappears in the printed specification ofthe above numbered patent requiring correction as follows:

' ead "90"; a e 6, line 63, claim 7, numeral 80 r p g andV thatthe saidLetters Patent should'be glass" and insert the word "rod";

Page 3, line 66, for the strike out the words "cene read with thesecorrections therein that the same may 'conform to the record of the casein the Patent Off-ice.

Signed and sealed this 14th day of February,

Seal.

A. n. 192s.`

M. 1 Moore, Acting Commissioner of Patente.

CERTIFICATE OF CORRECTION Patent No. 1,655,140. Granted January 3, 1928,to

JOHN T. FAGAN.

It is hereby certified that errorrappears in the printed specificationof the above numbered patent requiring correction as follows: Page 3,line 66, for the numeral "80" read "90"; page 6, line 63, claim 7,strike out the words "cane glass" and insert the word "rod"; and thatthe said Letters Patent should be read with these corrections thereinthat the same may conform to the record of the case in the PatentOffice.

Signed and sealed this 14th day of February, A. D. 1928.

M. J Moore,

Seal. Acting Commissioner of Patente.

